Nefit fault code 0 of .H
Fault code 0 of .H on a Nefit boiler (including EcomLine) means: The central heating system is heated correctly, the cylinder (if present) is not. Reset the appliance once. If the code comes back, a part is usually faulty. You can check the water pressure and settings yourself; leave work on gas-carrying parts to a certified gas engineer.
After a safety alert (gas, flue gas, combustion), reset no more than once and call in a certified gas engineer. If you smell gas, call your national gas emergency number or 112 immediately.
Cause
Fault code 0 of .H on a Nefit boiler indicates: The central heating system is heated correctly, the cylinder (if present) is not.
Fixing fault code 0 of .H: step by step
- Note the exact code and the type of your appliance (see the rating plate).
- Check the water pressure (1.5–2 bar with the system cold) and that the appliance has power.
- Reset the appliance once. If the code comes straight back, do not keep resetting it.
- If the code comes back, choose the matching part below or have a qualified heating engineer take a look.
Applies to
Nefit EcomLine, HR 11 Economy, HR 22, HR 22 Classic, HR 22 Excellent, HR 30, HR 30 Classic, HR 30 Excellent, HR 43, HR 43 Classic.
Fault code 0 of .H on other Nefit series
The same code does not mean the same thing on every series. Check the rating plate to see which series you have:
- 0 of .H on EcomLine, HR 11 Economy, HR 22, HR 22 Classic, HR 22 Excellent, HR 30: The central heating system gets too hot, the cylinder (if present) is not heated.
- 0 of =.H on EcomLine, HR 11 Economy, HR 22, HR 22 Classic, HR 22 Excellent, HR 30: The central heating system is not heated, the cylinder (if present) is.
Matching parts
Nefit parts are available from Instalpunt; shipping to EU countries from €12.95 (€16.95 for more distant countries), usually 3–5 working days.
Parts per Nefit-series: ProLine (NxT) · TrendLine (II) · EcomLine · TopLine.
This message does not point directly to one faulty part. These are the parts that most often fit this appliance:
- Nefit fuse holder UBA 2 pcs for EcomLine and TopLine € 29.07
- Nefit siphon gasket per 5 pcs for EcomLine and TopLine € 23.87
- Nefit control sensor for EcomLine € 50.91
Fix it yourself or call an engineer?
Always consult the manual for your appliance and work safely. If in doubt or if the fault comes back, call in a qualified professional. A question about a part? Write to us at info@instalpunt.nl.
Frequently asked questions
What does Nefit boiler fault code 0 of .H mean?
The central heating system is heated correctly, the cylinder (if present) is not.
How do I fix fault code 0 of .H on a Nefit boiler?
First check the cause described above. Then restart the appliance using the reset button. If the message comes back, a part usually needs replacing or the fault needs to be repaired by a qualified professional.
Which parts do I need for Nefit fault code 0 of .H?
That depends on the exact cause. In the Nefit parts overview at Instalpunt you will find the current price and stock for each part.
Can I fix fault code 0 of .H myself?
You can reset the appliance and check things like the water pressure or settings yourself. Work on gas-carrying parts must be left to a certified gas engineer.
All Nefit boiler faults and codes at a glance →